Privacy Policy

Panopticlick ("we", "us", "our") is committed to protecting your privacy. This privacy policy explains how we collect, use, and protect information when you use our browser fingerprinting test and privacy tools.

Last updated: December 1, 2024

2.1 Information Collected Automatically

By default, we do not collect any personal information. Our fingerprint analysis runs entirely in your browser (client-side). No data is transmitted to our servers unless you explicitly choose to share it.

2.2 Information You Choose to Share

If you opt in to data sharing, we may collect:

• Your browser fingerprint (technical configuration data)
• A randomly generated session ID
• Timestamp of your scan
• Aggregated, non-identifying statistics

We do not collect:

• Your IP address
• Your name or email address
• Cookies or tracking identifiers
• Browsing history
• Location data beyond timezone

If you choose to share your fingerprint data, we use it solely for:

• Research: Understanding browser fingerprinting techniques and their prevalence
• Statistics: Calculating uniqueness metrics and entropy distributions
• Education: Providing comparative data to help users understand their privacy

We never:

• Sell or rent your data to third parties
• Use your data for advertising or marketing
• Share individual fingerprints with anyone
• Track you across websites

When you opt in to data sharing:

• Data is stored on Cloudflare's infrastructure with encryption at rest
• We retain fingerprint data for a maximum of 12 months
• Aggregated statistics are retained indefinitely but cannot be tied to individual users

Under GDPR, CCPA, and other privacy laws, you have the right to:

5.1 Access

Request a copy of any data we have associated with your session. Use the "View My Data" button after a scan to see your stored data.

5.2 Deletion

Request deletion of your data at any time. Use the "Delete My Data" button or contact us with your session ID.

5.3 Portability

Export your data in a machine-readable format (JSON) using the "Export" feature.

5.4 Objection

You can opt out of data sharing at any time by simply not selecting the "Share anonymized data" option during scans.

We do not use:

• Cookies (tracking or otherwise)
• Local storage for tracking purposes
• Third-party analytics (no Google Analytics, etc.)
• Advertising networks
• Social media trackers

We may use local storage solely to remember your session ID if you chose to share data, so you can access it later.

Our website is hosted on Cloudflare Pages. Cloudflare may collect basic analytics (page views, countries) in aggregated form. We have disabled detailed analytics and logging.

We do not embed any third-party content, widgets, or scripts that could track you.

Our service is not directed to children under 13. We do not knowingly collect information from children. If you believe a child has provided us with data, please contact us for deletion.

Our service is available worldwide. By using our service, you consent to the processing of any data you choose to share in accordance with this policy.

For EU users: We operate under the legitimate interest legal basis for any optional data collection (privacy research). You can withdraw consent at any time.

We may update this privacy policy from time to time. We will notify users of significant changes by updating the "Last updated" date and, for major changes, posting a notice on our homepage.

If you have questions about this privacy policy or want to exercise your rights, contact us at:

This privacy policy is designed to comply with:

• General Data Protection Regulation (GDPR)
• California Consumer Privacy Act (CCPA)
• California Privacy Rights Act (CPRA)
• Other applicable privacy laws